Granted Patent
Utility
US 6,594,978 · App. 09/988,118
Device for adjusting the working height of a crop pick-up
Inventor:
Jean Viaud
Patented Case
View Patent ↗
Granted: Jul 22, 2003
Filed: Nov 16, 2001
Inventor
Jean Viaud
Assignee (at issue)
DEERE & COMPANY
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.